package com.xinchao.core.spring;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringApplicationContext implements ApplicationContextAware{
	
	private static ApplicationContext applicationContext = null;

	@Override
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
		if ( SpringApplicationContext.applicationContext == null ) {
			SpringApplicationContext.applicationContext = applicationContext;
		}
	}
	
	// 获取applicationContext
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }
    
    // 通过name获取 Bean.
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
    }
    
    //通过class获取Bean.
    public static <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }

    //通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name,Class<T> clazz){
        return getApplicationContext().getBean(name, clazz);
    }
    
}
